Zalicus Announces FDA Approval Of 32mg Dose Strength Of EXALGO®

Zalicus Inc. (NASDAQ: ZLCS), a biopharmaceutical company that discovers and develops novel treatments for patients suffering from pain and immuno-inflammatory diseases, today announced that the U.S. Food and Drug Administration (FDA) has approved the supplemental new drug application (sNDA) filed by Mallinckrodt Inc., a subsidiary of Covidien plc, for the 32 mg dose strength of EXALGO ® (hydromorphone HCl) Extended-Release Tablets (CII), for the management of moderate to severe pain in opioid-tolerant patients requiring continuous, around-the-clock opioid analgesia for an extended period of time.

“More than one hundred million Americans ¹ suffer from debilitating chronic pain that negatively impacts their quality of life; including their ability to work, attend school and care for their families," commented Mark H.N. Corrigan, MD, President and CEO of Zalicus. “By providing a variety of tablet strengths of EXALGO, physicians and patients can work together to develop and tailor a treatment regimen that optimally controls their pain."

The rights to EXALGO were acquired by Mallinckrodt LLC, the pharmaceuticals business of Covidien plc, in June 2009 for $15 million in upfront payments, additional development funding of up to $16 million and a $40 million FDA approval milestone payment. Zalicus receives tiered royalties on net sales of EXALGO by Mallinckrodt.

The FDA approved the three existing doses of EXALGO (8, 12 and 16 mg) in March 2010. Mallinckrodt subsequently submitted the sNDA in January 2012 with post-marketing data to support the original application’s compendium of clinical trials demonstrating safety, efficacy and tolerability. Using OROS ^® technology, EXALGO provides a steady release of hydromorphone throughout the day once steady-state is achieved after three to four days. Additionally, EXALGO has physical properties that may make it difficult to extract the active ingredient using common forms of physical and chemical tampering, including chewing, crushing and dissolving.

All EXALGO dosage strengths, including the new 32mg tablet which will be available soon, are subject to the recently approved Risk Evaluation and Mitigation Strategy (REMS) program for all long-acting and extended-release opioids. The three primary components of this REMS program are: training for prescribers in the form of continuing medical education (CME) initiatives, which will be available by March 2013; updated medication guides for each opioid and a patient counseling document; and assessment and auditing to ensure the reach and effectiveness of prescriber training.

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